Wakefield HS Intro to Bio
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28 terms
Terms | Definitions |
|---|---|
 biology | the study of life |
| Observation/problem, Research, Hypothesis, Experiment, Collect Data, Conclusion, Repeat to verify results | What are the steps of the scientific method? |
| testable and measurable | What are two things all hypothesis must be? |
| quantitative data | numerical data |
| qualitative data | descriptive data (words) |
| independent variable | (manipulated variable) - the one thing changed in the experiment |
| dependent variable | (responding variable) - what is measured (data) |
| amount of light | What is the independent variable in an experiment to test the effect of light on the growth of a plant? |
| growth of the plant | What is the dependent variable in an experiment to test the effect of light on the growth of a plant? |
| Experimental group | test group or the group(s) that receive the treatment |
| Control group | group that does not receive any treatment |
| To see if the independant variable is actually causing the change. | Why is it important to have a control group? |
| Standardized variables (constants) | things that stay the same throughout all the setups in an experiment |
| Plant that does not receive light | What is the control group in an experiment to test the effect of light on the growth of a plant? |
| Same type of plant, same size pot, same amount of water, etc. | What are some standardized variables in an experiment to test the effect of light on the growth of a plant? |
| Hypothesis | an educated guess |
| Theory | a scientific explanation of an observed phenomenon that tries to explain why something happens. |
| Law | a description of an observed phenomenon (but does not try to explain why they happen). |
| Inference | logical interpretation of an observation |
| X-axis | Where is the independent variable placed on a graph? |
| Y-axis | Where is the dependent variable placed on a graph? |
| Labels and units, title, appropriate scale on the axes. | What are several things all graphs should include? |
| Legend or key | What must a graph include if there are multiple lines? |
| ONE | How many things should the experimentor change in an experiment? (How many independent variables should there be)? |
| cells, DNA, reproduce, growth, respond to stimuli, evolve, maintain homeostasis, obtain energy/release waste, gas exchange | What are the 9 characteristics of life? |
| Homeostasis | maintaining a stable internal environment despite outside changes |
| Stimulus (stimuli) | Anything that causes a reaction |
| Light | Moths fly toward lights. What is the stimulus? |
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